Clinically, injuries of C5-C7 of the brachial plexus cause falling of the wrist and fingers in infants but not in adults unless 4 consecutive spinal nerves are injured. The purpose of this study was to compare the constituent difference of spinal nerves in the radial nerve between pup and adult rats.A group of 16 pup rats and a group of 16 adult rats were each divided into 2 groups of 8 (P1 and...

BACKGROUND Since the 1980s, the C7 nerve root has gained clinical relevance as a donor nerve in severe brachial plexus root avulsion injuries. Despite success with the cross-chest C7 nerve transfer, inducing injury on an otherwise normal side hinders global acceptance. By sacrificing the C7 nerve root, a predictable pattern of transient sequelae is seen, including extensor weakness and index an...

The number of motor units in a muscle, the abductor pollicis longus (APL), supplied by the radial nerve was estimated. In 40 APL muscles of control subjects, the mean number of motor units was found to be 421 +/- 99 (SD). Ten patients underwent conventional EMG examination to confirm the clinical suspicion of denervation in radial nerve territory. All presented a significant reduction in the nu...

The radial nerve is also known as the “great extensor nerve” due to its innervation of the triceps, wrist and finger extensors. It originates from the posterior cord of the brachial plexus, and its course along the proximal humerus makes it particularly vulnerable to injury by compression at the proximal arm. In the primary care setting, radial neuropathy is the third most common compressive ne...

AIM OF THE STUDY The injury of the radial nerve is not uncommon in humeral shaft fractures. These lesions may be of different types and levels and their treatment changes depending on traumatic characteristic. The authors present a case report of a patient affected by a closed shaft humeral fracture, consequence of an high energy trauma, associated with motor palsy of the radial nerve in which ...

The sympathetic vasomotor innervation of the skin of the human hand was studied in 47 subjects who underwent local anaesthetic block of ulnar, median or radial nerves at elbow or wrist levels. Areas of cutaneous anaesthesia were compared with cutaneous territories of paralytic vasodilatation delineated by infrared telethermography. It was found that: (1) during ulnar nerve block the area of vas...